Variable Resistors/Potentiometers

Resistors are passive electronic components that are used to resist the flow of electric current in a circuit. They are typically made from materials such as carbon or metal, and their resistance is measured in ohms. Variable resistors, also known as potentiometers, are resistors that have a variable resistance. This means that the resistance can be adjusted or "tuned" to a specific value. This is achieved by using a movable contact, called the wiper, that can be positioned along the resistance element to change the amount of resistance in the circuit. Potentiometers are commonly used as adjustable voltage dividers, to control the volume in audio equipment, and as position sensors in various applications. They are available in a variety of shapes and sizes, and can be linear or rotary. The resistance of a potentiometer can be controlled manually, using a knob or lever, or it can be controlled automatically using a mechanism such as a spring or a motor. The type of potentiometer used in a particular application will depend on the required resistance range, precision, and other factors.